How does the boxfish body protect it from predators?

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Scrawled filefish (Aluterus scriptus) — tetraodontiform Scrawled filefish (*Aluterus scriptus*)

The boxfish, a member of the order Tetraodontiformes, protects itself from predators primarily through a rigid, boxlike carapace. This protective covering is composed of fused bony plates that encase most of the fish's body, leaving only the eyes, mouth, and fins exposed. Because boxfishes are generally not capable of fast locomotion, this physical armor serves as a vital defense mechanism.21

In addition to this structural protection, boxfishes possess a chemical defense: when captured or handled, they exude a toxic substance that can be lethal to other fishes kept in the same environment. These combined physical and chemical adaptations help the boxfish survive in its tropical marine habitat.23